Exoplanet
K2-3 d
143.75 light-years
- Discovery
- Transit · 2015
- Radius
- 1.458 (+0.056 / −0.051) Earth radii
- Mass
- < 2.2 Earth masses
- Orbital period
- 44.556 (+1.3 × 10⁻⁴ / −1.2 × 10⁻⁴) days
- Semi-major axis
- 0.2014 (+3.4 × 10⁻³ / −3.3 × 10⁻³) AU
- Equilibrium temperature
- 305.2 (+3.1 / −3.2) K
- Mass provenance
- Mass
Measurements may come from different studies and need not form one self-consistent model. “Msini” is a minimum mass; a mass inferred from radius is an estimate. Equilibrium temperature is a model estimate, not a measured surface temperature or evidence of habitability.
NASA archive record and references ↗
Snapshot retrieved: 2026-10-11T04:15:07.688253+00:00